1-4 Angle Measure

# 1-4 Angle Measure - exterior of the angle, and the angle...

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Angle Measure Angle Measure Section 1-4

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angle a figure consisting of 2 noncollinear rays with a common endpoint. The 2 rays are called the sides of the angle. The common endpoint is called the vertex .
A ray extends indefinitely in one direction. A ray has exactly one endpoint and that endpoint is always used first when naming the ray. A B AB AB

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2 opposite rays form a line. A B C . BA and BC are opposite rays uuur uuur
interior exterior An angle separates a plane into 3 parts, the interior of the angle, the

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Unformatted text preview: exterior of the angle, and the angle itself. The sides of the angle are . The vertex is B. You could name this angle as B A C BC and BA 1 . 1 , , , or CBA ABC B Right angle = 90 Acute angle < 90 Obtuse angle > 90 Angle Bisector a ray that Angle Bisector a ray that divides an angle into 2 divides an angle into 2 congruent angles congruent angles 1 Angles that have the same measure are congruent. 2 2 1 2245 Angle bisector...
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## This note was uploaded on 12/01/2011 for the course MATH 105 taught by Professor Towns during the Fall '10 term at BYU.

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1-4 Angle Measure - exterior of the angle, and the angle...

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